With Crystalline Resonance, you can wait for the right permanent at the right moment
The main problem with these events is they only run for two weeks, so once they are finished the cards are currently unavailable if you missed them
Sometimes youll kill or block your opponents creature and be punished with a big morbid creature coming your way, or you won't be sure if you should attack into them because morbid will punish you (or sometimes youre the one using that to your advantage)
[4] For instance, if youre making a game with wood elves, you could include an archery ability and create a point system for arrow damage
Penny allows the player to pick up one of their basic Pokmon and all cards attached to it, which would also be an effective way of healing that Pokmon from damage
Personally, as a Magic player since the early '90s, working on the set has been such a joy because it combines the best of the early days of Magic with all the learnings and progress Magic has made along the way